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avformat/aiffdec: Check packet size

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Fixes: Fixes infinite loop
Fixes: 26575/clusterfuzz-testcase-minimized-ffmpeg_dem_AIFF_fuzzer-5727522236661760

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 0ba71a72d3)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-10-26 20:55:31 +01:00
parent fa31c57838
commit c1574b35c3
1 changed files with 2 additions and 0 deletions
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2
libavformat/aiffdec.c
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@ -398,6 +398,8 @@ static int aiff_read_packet(AVFormatContext *s,
break; break;
default: default:
size = st->codecpar->block_align ? (MAX_SIZE / st->codecpar->block_align) * st->codecpar->block_align : MAX_SIZE; size = st->codecpar->block_align ? (MAX_SIZE / st->codecpar->block_align) * st->codecpar->block_align : MAX_SIZE;
if (!size)
return AVERROR_INVALIDDATA;
} }
size = FFMIN(max_size, size); size = FFMIN(max_size, size);
res = av_get_packet(s->pb, pkt, size); res = av_get_packet(s->pb, pkt, size);